3 years ago

3 markers cost $5.79.

Mathematics

2 answers:

bazaltina [42]3 years ago

5 0

A is the ans

3-5.97

13-x

Cross multiply

lord [1]3 years ago

4 0

Answer:

C. 3/$5.79 = 13/x

Step-by-step explanation:

We can write the fact that 3 markers cost $5.79 as a proportion:

3/$5.79

Let x represent the unknown cost of 13 markers. Since 13 markers cost x, we have the following proportion:

13/x

The cost changes along with the number of markers purchased, and so the two proportions are equivalent.

3/$5.79 = 13/x

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